Drafting-pen.



P. BERGGREN. DRAFTING PEN.

APPLICATION FILED MAB..12,1913.

Patented Nov. 17, 1914.

J \9 Per 3039mm,

by Ego swam A/fomey.

srr 'rEs PATENT OFFICE.

PER BEncGnnmorBRoo'KLYN, NEW YORK.

DRAFTI-NG-PEN.

Specification of' Letters P t nt. Patented ov. 17,1914

1 Application filed m n-12. 1911:. Serial No. 7 3,112.

' To all whom it may concern Be it known that I, PER BEnGcnEN, a sub;

ject of ,the King of Sweden; residing at -B'rooklyn, in the county of Kings and State -of New York, have invented certain new and useful Improvements in Drafting-Pens, of which the following .is a specification.

The present invention has reference to" drafting pensfandlitproposes 'an improved im )lement .of' that eneral type or class \V'llLCh is'designed pri inarily for use in making topographic drawings.

' specified, and,"'further, of additional improved means which permit the blade, of

are, respectively, ragmental-side the pen. tobe turned or rotated for the pur pose o'f drawing the wavy or sinuous lines indicative of mountain ranges and the .like,

An embodimentl of the invention is'illustlgited in the accompanying drawing, wherer I "l,

Figure 1 is a part-sectional side elevation of the improved pen; .Fig. 2 is an enlargdd of the marking device; and Figs. .3 and 4 and front elevations of a modification; i

In said drawing,.5 indicates, generally, thehandle portion of the pen, 6 the blade, 'or pen proper,- and 7 themarking device.

.The part last mentioned is preferably constitutedby-a wheel 'whose peripheral edge is divided by'a series of radial notches or gaps S-which extend inwardly therefrom toward the center of the wheel and thus re salt in. the production of separated or spa cedteeth 9. Any number of these notches or gaps may be formed, as will be understood, and it'will -be further apparent that their width and general shape, as well as the distance between them, may be varied in accordance with the character of the lines to be drawn. fThe aforesaid wheel is revoliubly. mounted upon a pin .10 which is rigidly secured' at one end to one of the arms opening 11 provided in the other arm, the wheel itself being loose upon this pm, in

' consequence whereof. it'may be withdrawn and replaced by a wheel of 'fierent"size.or

differently notched periphery. ,Provisionevices for making'the broken "detail i ie'w, showing the mounting .for' thissubstitution of wheels is made through the agency of the usuala justingscrew, the shank 2'2 o'flwhich is en ged in I per orations 1n the. blade arms. Whenthe nut '2 on said shank is rotated in the proper direction, the terminals of. saidarms are;

. permitted to no veaway from each other, thereby d sengaging 'thefr' "end of the pin 10 from the opening '11-. n. rotating said nut in the.other direction, the term'nals of said farms are 'forced' towardacli otlie'n This mounting holds true for a 1 forms of. ,the invention.

the wheel is also formed'with a groove 3, which is intersected by. the notches 8,and where fine l1nes are"to be drawn, the ink In order to draw parallel lines, as 111.111- -d1cat1ng mountain ranges, the-per phery of 10 is" supplied directly to, the groove in. the.

lordinary manner, .but where 'the character of the work is such as to require heavy lines, a feeder 1% 'may be utilized. This feeder conforms generally to. the shape of the blade,

and is preferably used inv connection with- .pns of theconventi'onal or straight-armed' type, as shbwn'int-Figs. 3' and 4; In*the form therein depicted, the feeder embodies -a pair of arms whichare connected ftpgether at their inner or upper ends andare disposedbetween the arms of the blade; .These feeder arms a formed with alining openings through which the-shank 22 of the adjusting screw passes. The portion which. connects the'aforesaid inner. or upper. ends of the feeder arms mayitseif be fastened by any desired means to the handle end, between thebases of the, blade arms,-,or the feeder may be held in place solely by the adjusting screw. 7 feeder arms project into the wheel groove; for supplying the ink thereinto. Tith the blade, there may also a guide 15, here shown as in the form of an arm having a longitudinal slot'16 through whi'ch'a threaded pin 17 projects. Said arm d 4, and may be held in adjusted position'by means 'The extremities .of the I;

be utilized.

is disposed against one of the'arms of'the' 1 blade, as represented in Figs. 3 of the pen blade, adjacent the tip or"ter- I 'minal thereof, and is remo'vably; fitted at] of a clamping head 18 and a Washer 19 its other end in a correspondingly located which are carried by pin 17, said pin being' the handle in such a way as to permit it to be manually turned or swung laterally-relatively to said handle'by the operator, and the arms of said blade are given a somewhat angular shape, the lower or wheel-carrying vportions thereof being offset or disposed at an angle to the upper portions, as depicted in Fig. l.- Provision is made for this rotary movement of the blade by rigidly connecting it at its base to a rod 20 that extends through the axial boreof the handle,.the latter, in

such instance, being made tubular. -The upper end of this rod projects beyond the end of the handle, isthreaded, and carries a cap nut 21which, when turned in one direction, will become tightened against the upper end of the handle, and, in consequence, will hold the blade against rotation.

I claim as my invention 1-- 1. A drafting pen comprising a tubular handle, a blade having an axial extension revolubly; fitted in the bore of said handle, and a member carried by said extension for holding the same against revolution.

- 2. A drafting pen having a blade comprising a pair of cooperating arms, and a mark- .ing wheel mounted between the extremities of said arms and having its periphery formed'with a continuous groove and with radial notches intersecting the same for drawing broken parallel lines.

. 3. A drafting pen comprisinga tubular. .handle, and a'blade having its lower portion disposed at an angle to its upper portion, 1 and its said upper portion provided with an Where the blade is to be used for drawing Y axial extension which is revolubly fitted in V wavy or sinuous lines, it is mounted upon. 1

the bore of said handle.

4. A drafting pen comprising a tubular handle, a blade having its lower portion dis- 7 posed at an angle to its upper portion, and

its said upper-portion provided with an axial extension'which is revolubly fitted in the bore of said handle,=and a member carried by said extension for holding the same against rotation. I j v 5. A pen for drawing parallel sinuous lines comprising a tubular handle, a blade having its lower portion disposed at an angle to its upper portion, and its said upper'portion provided with an axial extensionwhich is revolubly fitted in the bore of said handle,

' and a peripherally notched marking wheel revolubly mounted at the ertremity of said blade.

6. A pen for drawing broken parallel sinuous'lines comprising a tubular. handle, a blade having its lower portion disposed at an angle to its upper portion, and its said upper portion provided with an axial exten-' sion which is revolubly fitted in the bore of said handle, and a marliing wheel revolubly mounted at the extremity of said blade, the periphery of said wheel being formed with a continuous groove an d with radialn t'chesintersecting the same.

In testimony whereof I have herepnto set my hand in presence of two subscribing witnesses.

. PER BERGGREN. Witnesses:

AXEL J OSEPHSSON, A. C. ZoBEER. 

